| Collector Specimen Matches |
| US |
| Montana |
| Premium Metasequoia (male/female) Oligocene Cone Fossils - Montana!! - , MT US |
| Nebraska |
| GEOLOGICAL ENTERPRISES Oligocene fossil Rabbit skull Megalagus turgidus Nebraska - , NE US |
| GEOLOGICAL ENTERPRISES Oligocene fossil Rabbit skull Megalagus turgidus Nebraska - , NE US |
| Oligocene Fossil Rabbit Skull In Matrix Palaeolagus White River Badland Nebraska - , NE US |
| 4 Fossil Jaws Oligocene Mammal Badlands Nebraska Squirrel Mouse Rabbit Deer - , NE US |
| Oligocene Fossil Skull Braincase Mammal White River Badland Nebraska - , NE US |
| Oligocene Fossil Assoc. Rabbit Skull Palaeolagus White River Badland Nebraska - , NE US |
| 4 dif Fossil Jaws Oligocene Mammal Badlands Nebraska Squirrel Mouse Rabbit Deer - , NE US |
| Stylemys Turtle skull- Fossil Bird- Lizard Skull- Fossil Egg: Oligocene Nebraska - , NE US |
| South Dakota |
| Oligocene badlands fossil Oreodont jaw Miniochoerus gracilis south Dakota - , SD US |
| Oligocene badlands fossil Oreodont jaw Miniochoerus gracilis south Dakota - , SD US |
| Merycoidodon culbertsoni Oreodont skull Oligocene South Dakota NO RESERVE - , SD US |
| Leptictis Extinct Insectivore Fossil Skull Oligocene South Dakota NO RESERVE - , SD US |
| Wyoming |
| GEOLOGICAL ENTERPRISES Oligocene fossil Rabbit skull Paleolagus haydeni Wyoming - , WY US |
